I talked a few times about a peer to peer video sharing system which is a bit like joost but most for user than as joost done ( centralize film where p2p is only here to descrease the use of server bandwich).

And I think to something quite similare as Democracy done. Democracy is a peer to peer video sharing system which have a GUI done with XUL ( as joost) and use VLC to read video. With that you can read quite all video of web😉